Update fedora.md

The renamed package 'wmdocker' did not make it into Fedora 20. It is still available for rawhide (will be Fedora 21.)
Merge pull request #6042 from dcorking/patch-1

Update fedora.md
Extract the config code from registry

Also remove support for 0.5.3 format registry list.

It will probably be worth adding a config.Delete(key) and
config.GetKeys() so config.Configs cna become private.

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
use the existing ~/.dockercfg file to default the host to talk to

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)